Know all about Trondhjemite and Harzburgite properties here. All properties of rocks are important as they define the type of rock and its application. Trondhjemite and Harzburgite belong to Igneous Rocks.Texture of Trondhjemite is Phaneritic whereas that of Harzburgite is Phaneritic. Trondhjemite appears Banded and Foilated and Harzburgite appears Rough and Shiny. The luster of Trondhjemite is subvitreous to dull while that of Harzburgite is shiny. Trondhjemite is available in black, brown, light to dark grey, white colors whereas Harzburgite is available in dark greenish - grey colors. The commercial uses of Trondhjemite are cemetery markers, creating artwork and that of Harzburgite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds.